Psst! Your phone is snooping on you. What you need to know and how to stop it – video

Revelations about the detailed location records stored on smartphones indicates just how much information companies including Apple and Google are able to gather. But it's not just the phone-makers – apps on your phone are hungry for your personal info too. So is your phone snooping on you? Here, we reveal what you need to know – and whether you can do anything about it